Chess board



FIG. 1 is a front view of a chess board.

FIG. 2 is a rear view thereof.

FIG. 3 is a right side view thereof.

FIG. 4 is a left side view thereof.

FIG. 5 is a top view thereof.

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a perspective view thereof.

The broken lines depict portions of the chess board that form no part of the design claim but included for illustrative purposes. 

CLAIM I claim the ornamental design for a chess board, as shown and described. 